Sound-box for sound recording and reproducing machines.



J. G. ENGLISH. scum) 1201: F011 scum: ngconnme AND mamonucme MACHINES.

APPLICATION FILED MAY 16, 1906. 94:9,?9. Patented Nov. 23, 1909.

a :1 oz HIIO'D attain;

Q Vihwoogo also be of well know UNITED STATES PATENT OFFICE.

JOHN C. GLISH,

or CAMDEN, NEW mnsnnass enon To vrc'ron TALKING monmn :commmrje. conrona'r'ron on NEW JERSEY. I

i s'ounin is o'x. non, SOUND nnconmuennn nnrnonucxivo MAcnInns.

citizen of the United .States, and a resident of'the city ofCamden, State offNewJersey,

have invented; certain gnew "and useful Improvements in ,sound-jBoxesfor Sound Recording and Reproducing' Machines, 'of which -the folloiving is a full, clear, and exact. de-

- scriptiqn reference being had to the: accoinpanying drawings, forming :a part of thls spec fication.v

sound boxes for sound recording and reproducing mach nes and some of the objects of my invention jafreyto provide a sirnple, du-

rable andfi exp 'ensive' mounting for a stylus bar; to prov de an improved mounting for a stylus barg which may be easily assembled or taken'apart toprovide an improved mounti ngf ora stylus bar, inv which a tension will be'appliedQto. the bar to restrain the oscillathe .bar; and to provide other i1nproven ents as will appear hereinafter.

the drawings; Figure l is an elcvational view, partly n-sectloln.showing the stylus bar"'moi 1nted uponthe sound box casing in accprdance with my invention; F ig.. 2 is a 5 bottoni pla'n} view of the same, part of the stylus bar beingremoved to show the mounting foi the stylus bar; Fig. 3 .is a vertical l ongitudinal sectionIon the line 3-3 of Fig.

J 2; Fig.4 is a vertical longitudinal section on the line ofg Fig. 2.; Fig. 5 is a correspondlng section on the :lme 5.5 of Fig. 2

and Fig. 6 is a perspective ,vieivof the supportupon which the stylus baris, mounted.

The stamps; casing 1, may be of the u's'nal jo p ened end construction having an orif ce 2 the rear end thereof to. which the- 40 sound conveyingtube 1nay; .be connected in diaphragm 3 may.

any suitablemanner, w I h;

p v ytype, but I prefer. to employ one in} which the peripheral portions paretnrnefd atright angles to the My inventionreljates to improvementsin Attached 1 at itsinnereridto the dia- ;phragm andpassingthrough the opening 5 inthe casing-of thesound' box, is the stylus bar 7 the lower end of said stylus bar being provided with the usual'socket 8 in which the needle 9 maybe, secured in any well known manner. The stylus bar 7 is mounted-onastylus supporting rod or oscillatory support 10, which ispreterably formed with a' cylindrical -middle portion 11, fitted tightly within a suitable openingin i the port and the said journals 12-12, I provide the stylus bar support with flattened portions or surfaces 13-13, and the plane of these surfaces when the sound box 'isin operative position is preferably; slightly above the axis of oscillation of the stylus bar. .While the surfaces ofthe groove 6-'-6 are preferably cylindrical or semicylindrical, the journals or trunnions- 12--12 of the stylus bar support 10 may be either cylindrical and closely fit within said groovesor they may be substantially V shaped. in cross section in orderto reduce the'friction between said journals and said bearing grooves. The latter form of journal 1 is plainly shown in Figs. 4 and 6 and in this casetheactual engaging surfaces .of. the

grooves.-and trunnions will be cylindrical. 9 'lhls construction of j ournal' and'bearlng 1s found materially to decrease the friction of said bearing anotto resultin imparting an lncreased sensitiveness to the stylus bar and 45 faceoflthe diaphi agm to forma. cylindrical consequently to the diaphragm secured flange et'by which the Whole diaphragm is I thereto.

. stifi'enedand by which itis secured within the sound box either b cement or. by :its contact with i the wal s ,of the,casing.

50 Through one'side ofthe casin is provided an' open ng which maybe 0 any suitable. 1 shape, and on opposite sidesofsald ope'ning,-

I providev grooves 6G preferably semi-cylindrical 1ncross-sectlon and arranged in a 55 plane parallel to the'plane ofthe diaphragm.-

Secured to the sound box casing 1 is a springl, the object of which is to hold the stylus bar in its bearing grooves and also to apply a tensionto the stylus bar. In the form of myimrention disclosed in the 'draw- I ings, this spring is best seen in Figs. 2 and Therein the-.springis shownas comprising .a strip eor plate .11 ..of thin spring metal se--" cured; at. opposite ;ends."by screws to the casing. On opposite sides of said body portion 15 and extending inward from the ends thereof, are leaf springs 1717, the free ends of which are bent inwardly as shown in Fig. 5 and engage the flattened surfaces 1313 of the stylus bar support.

The main or body portion of the spring 15 is provided with a suitable aperture 15, through which the stylus bar passes.

In a sound box constructed and assembled in the manner above set forth, the springs 1717 act upon the stylus bar support in a plane which is situated slightly above the axis of the oscillation of the stylus bar and consequently apply little tension to the stylus bar when the same is inoperative.

When, however, the stylus bar begins toout departing from the spirit and scope of my invention as pointed out in the appended claims. 1

What I claim as new and desire to protect by Letters .Patent of the United States is 1. In a sound box for talking machines, a stylus bar, a stylus bar support provided with a flatt ned surface, journals on the ends of said support, and means pressing against said flattened surface and tending toforce said surface away from the axis of gscillation of said bar for yieldingly holdng glidaiournals in position, and for applymg't'efi'sion to said stylus bar.

2. The combination with a sound box having grooves on one side thereof, a stylus bar, journals on which said stylus bar is mounted, resting in said grooves and a 5 ring,

connected at one end to said soun box, having its other end free to hold said journals within said grooves.

3. The combination with a sound box, a stylus bar and a stylusbar support by which said stylus bar is pivotally supported on said sound box, of a flat spring, rigidly connected at one end to said sound box and havin its other end loosely pressing aga nst said stylus bar support at a point s aced from the axis of oscillation of the sai bar and in the direction from said axis toward which said spring is pressing as it acts upon said bar.

4. In a sound box for talking machines, a

surface of said support at a point upon said flattened surface 1n the d1recti on of the pressure of said spring against sald flattened surface from the axis of oscillation of thewith flattened surfaces, journals on the end.

of said sup art, and oppositely extending flat springs having one end of each secure to said sound box and having their free ends pressing against said flattened surfaces.

6. In a sound box for talking machines, a diaphragm, a stylus bar and stylus bar supportin vrod, journals at the ends of said stylus in supporting rod and upon which said stylus bar is adapted to oscillate and a spring secured to said sound box and engaging said stylus supporting rod at a point between its axis of oscillation and the said diaphragm.

7. The combination with a sound box provided on one side with an opening and with bearin grooves on either side of said opening, 0 a stylus bar extending throu h said opening, a stylus bar supporting rod, journals on the ends of said stylus bar supporting rod restin /in said grooves and a sprin secured to sai sound box with its free en adapted to press against said stylus bar supporting rod at a point upon said bar in the direction toward which said free end is pressin against said bar from the axis of oscillatlon of the said bar.

8. The combination with a sound box-provided on one side with an opening and with bearing grooves on either side of said opening, of a stylus bar, a stylus bar supporting rod, journals on the ends of said stylus bar supporting rod resting in said grooves and means for yieldingly holdin said journals in said grooves and for app ying a tension to said stylus bar.

9. In a sound box for talking machines, a stylus bar, a journal for said stylus bar and means to apply pressure upon said journal from a'point upon said journal in the d rection of said pressure upon said journal from the axis of oscillation of said bar.

10. In a sound box for talkin machines, a stylus bar, a journal for sai bar, and a spring to apply pressure upon said journal from a point upon said journal in the direction of said pressure upon said journal from the axis of oscillation of the said bar.

11. In a sound box for talking machines, a

- stylus bar, a journal for said bar, and a flat spring to apply a pressure upon said journal from a point upon said ournal in the direction of said pressure upon said journal from the axis of oscillation of said bar. 7

12. In a sound box for talking machines, a stylus bar, an oscillatory support for said bar having a flattened surface upon one side thereof, and means to apply pressure upon said flattened surface at a point in said flattened surfacein the direction of the pressure uponsaid surface from the, axis of oscillationofsaidbar. v i

'18. Ina sound box for talking machines, a stylus bar, a support for said bar provided with oppositely extending journals and vflattened surfaces, and means to appl pressure .upo'n s aid' flattened surfaces, sai surfaces being arranged so that the application v.of thegressure is at pointsin said surfaces in the irection of the pressure uponsaid surfaces from the axis of oscillation of said; bar. 14:. In a sound box for talking machines, a stylusbar, 'a'support for saidzbar having oppositely extending journals and flattened surfaces and flat springs to apply pressure upon said flattened surfaces, said surfaces being arranged so that the application of the pressure is at points in said surfaces in the direction of the pressure upon said flattened surfaces fromthe axis of oscillation, of said bar.

15. In a sound box forvtalkingmachines,

a stylus bar, an oscillatingsupport for said bar having flattened portions, and oppositely extending springs to apply pressure to said flattened portions. j

16'. In a sound boxfor talking machines, a stylus bar, an oscillatory support for said bar having flattened portions, and oppositely extending springs pressing upon said flattened portions at points in the direction of'the pressure upon said flattened portions from the axis of oscillation of said support.

'17." In a sound box for talking machines, a stylus bar, a rod supporting saidv stylus bar, journals atthe ends of said rod upon which said rod is adapted to oscillate, and oppositely extending springs, pressing upon said rod.

18; In a sound box for talking machines, a stylus bar, a, rod supporting said stylus bar, journals at the ends of said rod and upon which said stylusis adapted to oscillate, and oppositely extending springs pressing upon saidrod at points of said rod in the direction of the pressure upon said rod lfgrom the axis of oscillation of the said stylus ar; v

19. In a sound box for talking machines, a' diaphragm, a flange extending substantially at rightangles to said diaphragm and proivided with an aperture extending therethrough and with grooves upon opposite sides of said'aperture, a stylus bar extending through said aperture, a supporting rod for said stylus bar resting in said grooves, and means to hold said rod in said grooves.

20. In a sound box for talking machines, a diaphragm, a flange extending substantially at right angles to said diaphragm and provided with aperture extending therethrongh and with grooves upon opposite sides of said aperture, a stylus bar extendfree ends arranged to grooves-L a for said stylus bar resting in said grooves,

and o positely extending springs having p hold said rod in said 21. In a sound box for talking'machines,

a flange provided with :an aperture and. havingtbearings upon opposite sides of said aperture, a stylusbar extending through said aperture, journals-for said stylus bar .restinglupon saidlbearings, and a spring and oppositely extending springs integral with said first-mentioned spring, to hold said journals upon thesaid bearings.

22. In a sound 'box for I talkingmachines,

a. flange provided-with an aperture-and hav ing bearings upon opposite sides; of said aperture, a stylus bar extending through said aperture, journals for said stylus'loar resting upon said bearings, aspring having an aperture through whichsald stylus bar ex tends, and oppositely extending springs n1- tegral with said first-mentioned spring to hold said journals upon the said bearings.

23. The combination'with' a sound box having grooves on one side thereof, of a stylus bar, journals 1 on which said stylus baris mounted resting in said grooves, and a spring connected at one end to' said sound box, and having its other end free to hold said journals within said grooves by a pressure applied at a point upon said journals in the direction of the pressure upon said journals from the axis of oscillation of the said bar. I Y

. 24. The combination with a sound 'box provided on one side with an'opening, and with bearing groves 'oneither side of said opening, of a stylus bar extending through said opening, a rod supporting said bar, journals on the ends of said rod resting in said groovesyandmeans' for yieldingly holding said journals' in said grooves and for applying apressure to said stylus bar at a point in the direction of the pressure from the axis of oscillation of-said bar.

25. In a sound box, the combination with a casing having an aperture in one side thereof, of a stylus bar extending through said aperture and mounted upon said casing, and a spring plate surrounding and contacting with said bar, and contacting with and secured to saidcasing for holding said bar upon its mounting.

26. In a sound box, the combination with a casing having an aperture in one side thereof, of a stylus. bar extending through said aperture and journaled upon said casing, and an apertured spring plate secured to said casing and surrounding said bar to hold said bar yieldingly in position, said plate being provided with a spring arm integral therewith bearin against-said bar, and extending transvers y of the axis of oscillation thereof. 1

. I 34. In a sound reproducer, a stylus bar mounted to oscillate on a ivotal, bearing, a'

29. In a sound ox, a stylus bar, a mount- 2 ing therefor, and a spring surrounding said bar to hold the same upon the said lnountin said bar being held in a-fixed position longitudinally.

30. In a sound box, a stylus bar, a mounting therefor, and a spring surrounding the said bar to hold the same upon the said mounting, said bar being restrained to osoillate upon a fixed axis.

31. In a sound reproducer, a stylus bar mounted to oscillate on an axis transverse to the longitudinal axis of said bar, and a' spring to tension said bar surrounding said bar and exerting pressure normally in a line situated in a plane of the axis of oscillation of said bar.

32. In a sound reproducer, a stylus bar fulcrumed on an axis transverse to the longitudinal axis of said bar, and a spring surrounding said bar for exertin pressure to tension'said bar, said pressure ing exerted normally in a line situated in a plane of the longitudinal axis of said bar and in the plane of the axis of oscillation of said bar.

33. In a sound reproducer, a stylus bar ful'crumed on an axis transverse to the longitudinal axis of said bar, and a spring surrounding said bar for exerting pressure to tension said bar, said pressure being exerted normally in a line situated in the plane of the longitudinal axis of said bar and in a lane transverse to the plane of oscillation 0 said bar.

spring surrounding said' ar for exerting ressure normally 1n a line substantially co- Lncident with the longitudinal axis of said 35. In a sound box, astylus bar, journals upon which said bar is mounted to oscillate, a spring surrounding said bar and exerting a yieldmg pressure between said journals and said sound box.

36. In a sound box for talking machines,

a stylus bar, trunnions mounted on said sound box upon which said stylus bar oscillates, a spring surrounding said stylus bar close to said trunnions and exerting a ielding pressure between said trunnions an said sound box.

37. In a sound box, a stylus bar, a mounting therefor restraining said bar to oscillate in a single plane, and means surrounding said bar to hold the samev upon the said mounting.

38. In a sound box, a stylus bar, a mounting therefor, restraining said bar to oscillate in a single plane,' and means surrounding said bar to hold the same upon the said mounting and to yieldingly resist the oscillation of the said bar.

39. In a sound box, a stylus bar, a mounting therefor restraining saidbar to oscillate in a single plane, and a spring surrounding the said bar to hold the same upon the said mounting.

40. In a sound box provided with an aperture in the casing thereof, a stylus bar extending through said aperture, a mounting for said bar, and a spring interposed between the bar and the box to hold the bar upon its mounting, the longitudinal axis of said bar being normally substantially coincident with the longitudinal axis of said spring at the mounting.

41. In a sound box provided with an aperture in the casing thereof, a stylus bar extending through said aperture, trunnions to support said stylus bar resting in grooves provided therefor in said casing u on opposite sides of the said aperture, an a spring surrounding said bar to hold the said trunnions in said groove.

42. In a sound box, a stylus bar, a support for said bar mounted to oscillate on a fixed axis, and means to apply pressure at a point upon said support in the direction of said pressure from said axis.

43. In a sound box, a stylus bar, a sup ort for saidbar mounted to oscillate oil a xed axis, and means to apply pressure at a point upon said support in the direction of said pressure from said axis, said pressure increasing as the stylus bar is osc1 lated away from its normal position. f

In witness whereof, I have hereunto set my hand this 15th da of May, A. D. 1906.

J HN O. ENGLISH. Witnesses:

CORA A. WITMER, ALEXANDER PARK. 

